Error message should suggest sensible alternatives for illegal operators

[cdisselkoen]

Category

Error message improvements

Describe the feature you'd like to request

Cedar error messages and suggestions should be better for "common operator errors, such as AND instead of &&" (that was the example in feedback I got). We should think about what all keywords/symbols people might try to use as operators, and provide reasonable suggestions. Possibly-incomplete list:

• and (case insensitive) -> &&
• or (case insensitive) -> ||
• & -> &&
• | -> ||
• ? -> suggest if-then-else? (for people coming from languages with C/Java-style ternary)
• other suggestions?

Describe alternatives you've considered

N/A

Additional context

No response

Is this something that you'd be interested in working on?

• [ ] 👋 I may be able to implement this feature request
• [ ] ⚠️ This feature might incur a breaking change

[mwhicks1]

Is this something where we can create a framework for this style of error, and then we can solicit PRs from the community for the most useful/impactful replacements?